Session in Magento can be implemented and managed by one of the following way File system. Database. Memcached. tmpfs Filesystem. Out of these 4 options, 2 options are available while installing Magento from which File system is by default selected. How to Add, Retrieve and Delete (unset) a Magento session?  Add. Syntax to add Magento session Mage::getSingleton(‘{{type}}/session’) ->set{{SESSION_NAME}}(‘VALUE’); For  e.g.…